BPhillip York: A really strong counterspell/steal spell that nets you a copy, potentially game-winning especially since you get to retarget a spell and generate a copy, but fairly random
Well, today is your lucky day
Varragoth, Bloodsky Sire's boast ability costs two mana and allows you to search your library for a card and put it on the top of your deck
Since youre in the colors with the most removal in Magic, you also get some powerful spells to keep your opponents in check
The next time you open Cockatrice, it might notify you about detecting a new database and show you the sets included, but all the cards will be browsable in the deck editor
You can run 1 copy only, but drawing it will often be a death sentence